212220202 has 16 divisors (see below), whose sum is σ = 329653800. Its totient is φ = 102343360.

The previous prime is 212220191. The next prime is 212220247. The reversal of 212220202 is 202022212.

It can be written as a sum of positive squares in 4 ways, for example, as 197711721 + 14508481 = 14061^2 + 3809^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98052 + ... + 100192.

Almost surely, 2^212220202 is an apocalyptic number.

212220202 is a deficient number, since it is larger than the sum of its proper divisors (117433598).

212220202 is a wasteful number, since it uses less digits than its factorization.

212220202 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3881.

The product of its (nonzero) digits is 64, while the sum is 13.

The square root of 212220202 is about 14567.7795837252. The cubic root of 212220202 is about 596.4795717435.

Adding to 212220202 its reverse (202022212), we get a palindrome (414242414).

The spelling of 212220202 in words is "two hundred twelve million, two hundred twenty thousand, two hundred two".